EP1223596A1 - Luftisolierter Hochspannungstrennschalter - Google Patents

Luftisolierter Hochspannungstrennschalter Download PDF

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Publication number
EP1223596A1
EP1223596A1 EP01403266A EP01403266A EP1223596A1 EP 1223596 A1 EP1223596 A1 EP 1223596A1 EP 01403266 A EP01403266 A EP 01403266A EP 01403266 A EP01403266 A EP 01403266A EP 1223596 A1 EP1223596 A1 EP 1223596A1
Authority
EP
European Patent Office
Prior art keywords
contact
fingers
angle
disconnector
arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01403266A
Other languages
English (en)
French (fr)
Other versions
EP1223596B1 (de
Inventor
Daniel Demissy
Anh-Dung Huynh
Richard Marchand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grid Solutions SAS
Original Assignee
Alstom SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alstom SA filed Critical Alstom SA
Publication of EP1223596A1 publication Critical patent/EP1223596A1/de
Application granted granted Critical
Publication of EP1223596B1 publication Critical patent/EP1223596B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/52—Contacts adapted to act as latches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H01H2031/286—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact wherein the contact is rotatable around its own longitudinal axis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/023—Base and stationary contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/026—Movable parts and contacts mounted thereon

Definitions

  • the present invention relates to a high voltage disconnector with air insulation.
  • a disconnector notably includes an arm, often called a blade, pivoting around a horizontal axis and electrically connected to one of its ends to a first connector disposed at the top of a first insulating column; the other end of the arm, the free end, has a contact part, called hammer, which cooperates, in the closed position of the disconnector, with a jaw connected to a second connector disposed at the top of a second insulating column.
  • the jaw consists of two parallel rows facing each other, contact parts each formed from a curved copper strip and attached to a jaw support.
  • the hammer which extends the arm to its end is a piece of bronze, heavy and expensive whose section by a plane perpendicular to the axis of the arm corresponds to a smaller circle diameter than that of the arm and which flattens over a diameter extending to reach the diameter of the arm, the thickness of these two extensions diametral being 2 to 3 mm with rounded edges.
  • the present invention proposes to improve certain aspects of a disconnector of this type and relates to a high voltage disconnector with air insulation comprising a pivoting arm capable of pivoting at one of its ends, around a horizontal axis perpendicular to the axis ⁇ of the arm and also able to rotate around its own axis ⁇ , the free end of the arm carrying a contact piece called cooperating hammer, in position closed disconnector, with a jaw comprising a support jaw to which are fixed two rows facing each other with contact, characterized in that said contact fingers are tubular and open at both ends.
  • said fingers facing each other make between them an angle ⁇ between 2 and 6 °.
  • said contact fingers are fixed to the jaw support so that, in the closed position of the disconnector, the angle E between the axis ⁇ of the arm and the contact fingers is greater than 90 °.
  • said hammer is equipped with contact pads cooperating with the contact fingers, each pad contact forming a corner, angle ⁇ , which, when closing the disconnector, meets the corresponding row of fingers at an angle of attack ⁇ , said angle of attack ⁇ being less than 90 °.
  • each contact plate has a face of curved contact extending over an angle ⁇ , seen from the axis ⁇ of the arm, this angle ⁇ being of the order of 17 °.
  • the angle ⁇ seen from the axis ⁇ arm, between this point of contact and the plane perpendicular to the finger contact passing through the axis ⁇ , is of the order of 10 °.
  • Fig. 1 is a partial view, from the left of FIG. 2, a disconnector according to the invention.
  • Fig. 2 is a sectional view along II-II of FIG. 1.
  • Fig. 3 is a top view of FIG. 1.
  • Fig. 4 is a perspective view showing the jaw of the switch.
  • Fig. 5 shows the section of a contact finger of the jaw.
  • Fig. 6 is a section on VI-VI of FIG. 5.
  • Fig. 7 is a diagram illustrating the angle of attack of the hammer with the jaw contact fingers when rotating the hammer during the disconnector closing.
  • Fig. 8 is a diagram illustrating the angular contact range at constant pressure of the jaw fingers against the hammer.
  • a disconnector comprising a pivoting arm 1 of axis ⁇ able to pivot in a vertical plane around a horizontal axis perpendicular to ⁇ , not shown, located to the left of fig. 1.
  • the unrepresented part of the arm, its control pivoting about said horizontal axis, as well as its control rotation about its axis ⁇ , as well as its support, are not part of the invention and could, for example, be in accordance with what is described in French Patent 2,674,985 with reference to FIG. 1.
  • the arm 1 is tubular, as can be seen in fig. 2, and brings to its free end a contact piece called hammer 2.
  • the hammer is composed of an aluminum support piece 3 on which were fixed two copper contact plates 4A and 4B. This lightens the hammer.
  • contact pads 4A and 4B of a particular shape, specified further on, constitute the cooperating contact parts, in the closed position of the disconnector with two rows, facing each other, of contact fingers 5A and 5B of the disconnector jaw.
  • a jaw support 6 which fingers 5A and 5B are fixed to a jaw support 6 by a welding 7.
  • a stop 8 for limiting the penetration of arm 1 between fingers 5A and 5B of the jaw.
  • a connector 9 is also fixed to the jaw support 6.
  • a second connector, not shown, is electrically connected to the end not represented by arm 1, on the side of its articulation around a horizontal axis.
  • the jaw is supported at the upper end of an insulator support which is not visible, fig. 1, that the fitting 10 at its end higher.
  • the arm 1 When closing, the arm 1 begins by pivoting around its horizontal axis until entering the jaw, between fingers 5A and 5B making a swivel angle of about 92 °, then the arm 1 rotates around its axis ⁇ by 90 ° in the direction of arrow 15, fig. 7. It is while in the closed position, as shown in these figs. 1 to 3.
  • arm 1 undergoes an effort F tending to extend the arm from the jaw.
  • This electrodynamic effort becomes very important in the event of a short circuit between phase and earth or between two phases.
  • the fingers 5A and 5B are fixed to the jaw support 6 so that the angle E between the axis ⁇ of the arm 1 in the closed position and the fingers 5A-5B is greater than 90 °.
  • the force F is maximum when the fingers 5A-5B are perpendicular to the axis ⁇ of arm 1 and it decreases when this angle increases. Taking for example an angle E of 120 °, the force F is approximately 0.6 times that in the case where the angle E is 90 °.
  • the angle E is approximately 120 ° and preferably between 100 and 140 °.
  • fingers 5A and 5B are not parallel but form between them a slight angle ⁇ of a few degrees of the order of 2 to 6 °.
  • the fingers 5A and 5B are welded to the jaw support 6 making an angle D of 88 °, which gives an angle of 4 ° between the fingers 5A and 5B.
  • a stop of lock 11 is fixed to a contact finger 5B at a level above hammer 2 in the closed position of the disconnector.
  • this stop 11 has no disadvantage since the opening begins with a 90 ° rotation of the hammer 2 in the direction of the arrow marked 12, fig. 2, before pivoting of the arm 1 around of a horizontal axis perpendicular to the plane of FIG. 1.
  • the fingers 5A and 5B facing each other are fixed, as has been said, to the jaw support 6 by welding 7 with angles E and D and have a profile tubular open at both ends so as to induce an exchange thermal by convection in the tube.
  • These fingers are made of aluminum and each equipped on the side facing the row opposite, with a blade copper contact 13A, 13B cooperating directly with the pads hammer copper contact 4A, 4B 2.
  • a retaining rod, respectively 14A, 14B and 14C connects, in pairs, fingers 5A and 5B so as to limit their spacing. These retaining rods are located approximately mid-length of the contact fingers 5A, 5B.
  • the fingers 5A, 5B flex, forming spring, between rods 14A, 14B and 14C and the upper end of the fingers, ensuring each finger self-positioning against the pads copper contact 4A and 4B of hammer 2, thus optimizing the contact line between the hammer and the fingers.
  • the arm 1 undergoes an electrodynamic force of lateral displacement in the direction of F 1 or F 2 (fig. 2), depending on whether the short circuit takes place with a phase located to the right or left of the phase on which the disconnector currently described is located.
  • This movement thanks to the spring effect of the fingers and the retaining rods 14A, 14B and 14C does not cause contact breakage between the contact parts 4A and 4B of the hammer and the contact blades 13A, 13B of the fingers .
  • Fig. 5 shows the section of a finger, for example 5B, and FIG. 6 this same finger in section according to VI-VI of fig. 5.
  • the pads which have a corner end 16 having an angle ⁇ meet fingers with an angle of attack ⁇ .
  • This angle of attack ⁇ is less than 90 ° and preferably of the order of 60 °, and makes it possible to break the ice which may have forming on the contact blades 13A, 13B.
  • the angle ⁇ of the corner 16 is by example of the order of 30 to 40 °.
  • this contact occurs while the distance between the axis ⁇ of the corner point 16 is greater than the distance separating the axis ⁇ from fingers 13A, 13B so that from this moment and until the corner point 16 arrives at point 18, which corresponds to a rotation of one angle y of about 10 °; contact pads 4A, 4B repel fingers 5A, 5B acting as a spring, the contact pressure increasing up to this point. Then, the contact face 19 being curved, the contact pressure remains substantially constant over a range of rotation at an angle ⁇ , fig. 8 about 17 ° corresponding to the angle ⁇ covered by the contact surface 19 contact pads 4A, 4B seen from the ⁇ axis.
  • This contact range at constant pressure on an angle ⁇ of approximately 17 ° makes it possible to overcome the angular deviations resulting from a deficient adjustment or a loss of precision caused by wear of components.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Organic Insulating Materials (AREA)
  • Breakers (AREA)
  • Push-Button Switches (AREA)
  • Telephone Set Structure (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP01403266A 2001-01-12 2001-12-17 Luftisolierter Hochspannungstrennschalter Expired - Lifetime EP1223596B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0100425 2001-01-12
FR0100425A FR2819627B1 (fr) 2001-01-12 2001-01-12 Sectionneur a haute tension a isolation dans l'air

Publications (2)

Publication Number Publication Date
EP1223596A1 true EP1223596A1 (de) 2002-07-17
EP1223596B1 EP1223596B1 (de) 2008-05-07

Family

ID=8858774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01403266A Expired - Lifetime EP1223596B1 (de) 2001-01-12 2001-12-17 Luftisolierter Hochspannungstrennschalter

Country Status (10)

Country Link
US (1) US6570117B2 (de)
EP (1) EP1223596B1 (de)
CN (1) CN1213450C (de)
AT (1) ATE394786T1 (de)
BR (1) BR0200026A (de)
DE (1) DE60133876D1 (de)
ES (1) ES2306699T3 (de)
FR (1) FR2819627B1 (de)
MX (1) MXPA02000414A (de)
PT (1) PT1223596E (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2954507B1 (fr) * 2009-12-22 2012-04-20 Itron France Module de mesure de courant de phase pour compteur electrique, dote d'une fonction de coupure de courant
IT1400992B1 (it) * 2010-07-12 2013-07-05 Areva T&D Italy S P A Sezionatore, particolarmente del tipo a doppia interruzione con doppio movimento.
CN203746673U (zh) * 2013-02-05 2014-07-30 阿斯科动力科技公司 并联切换开关的触点组件
AU2018367905B2 (en) * 2017-11-17 2021-08-05 Hitachi Energy Ltd Contact system for electrical current conduction and bus transfer switching in a switchgear

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554824A (en) * 1946-05-31 1951-05-29 Westinghouse Electric Corp Switch
US2733322A (en) * 1956-01-31 curtis
US2745919A (en) * 1952-05-08 1956-05-15 Chance Co Ab High voltage air break switch assemblies
DE1022299B (de) * 1954-07-31 1958-01-09 Igor Ponoschin Sicherungsunterteil
US2963560A (en) * 1958-02-12 1960-12-06 Kearney James R Corp Switch
US3182145A (en) * 1961-06-16 1965-05-04 Mc Graw Edison Co Electric switch
US3206568A (en) * 1961-04-19 1965-09-14 Ite Circuit Breaker Ltd Dual metal electric switch
DE1928922A1 (de) * 1969-06-06 1970-12-10 Siemens Ag Trennschalter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544742A (en) * 1969-01-09 1970-12-01 Westinghouse Electric Corp Electric switch having improved blade construction
US4379956A (en) * 1980-12-15 1983-04-12 Cleaveland/Price Enterprises, Inc. Break-jaw construction for a disconnecting switch structure
FR2668647B1 (fr) * 1990-10-26 1992-12-24 Gec Alsthom Engergie Inc Sectionneur a insertion de resistance.
FR2674985B1 (fr) * 1991-04-08 1996-09-06 Gec Alsthom Engergie Inc Sectionneur a ouverture brusque.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733322A (en) * 1956-01-31 curtis
US2554824A (en) * 1946-05-31 1951-05-29 Westinghouse Electric Corp Switch
US2745919A (en) * 1952-05-08 1956-05-15 Chance Co Ab High voltage air break switch assemblies
DE1022299B (de) * 1954-07-31 1958-01-09 Igor Ponoschin Sicherungsunterteil
US2963560A (en) * 1958-02-12 1960-12-06 Kearney James R Corp Switch
US3206568A (en) * 1961-04-19 1965-09-14 Ite Circuit Breaker Ltd Dual metal electric switch
US3182145A (en) * 1961-06-16 1965-05-04 Mc Graw Edison Co Electric switch
DE1928922A1 (de) * 1969-06-06 1970-12-10 Siemens Ag Trennschalter

Also Published As

Publication number Publication date
EP1223596B1 (de) 2008-05-07
BR0200026A (pt) 2002-10-22
PT1223596E (pt) 2008-07-21
DE60133876D1 (de) 2008-06-19
US20020092828A1 (en) 2002-07-18
US6570117B2 (en) 2003-05-27
ES2306699T3 (es) 2008-11-16
CN1365129A (zh) 2002-08-21
ATE394786T1 (de) 2008-05-15
FR2819627A1 (fr) 2002-07-19
MXPA02000414A (es) 2004-05-21
CN1213450C (zh) 2005-08-03
FR2819627B1 (fr) 2004-08-06

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